#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <errno.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <setjmp.h> 
#include <signal.h>
typedef short int s16;
typedef unsigned short int u16;
typedef int s32;
typedef unsigned int u32;
typedef char s8;
typedef unsigned char u8;

#define DEBUG_SAMPLE 
#define DAEM
#ifdef DAEM
#define OUT_PUT(format,args...) syslog(LOG_ERR,format,##args)
#else
#define OUT_PUT(format,args...) printf(format,##args)
#endif

/*原始气象数据*/
struct p_gdw_weath
{
	long mtype;
	float average_windspeed_10min;/*十分钟平均风速*/
	int average_winddirection_10min;/*十分钟平均风向*/
	float max_windspeed;
	float extreme_windspeed;
	float standard_windspeed;
	float air_temperature;
	float humidity;
	float air_pressure;
	float precipitation;
	float precipitation_intensity;
};
/*国网数据报文格式*/
struct weather_packet/*气象数据报文*/
{
s16             sync;
s16             packet_length;
u8              cmd_id[17];
u8              frame_type;
u8              packet_type;
u8              component_id[17];
u32             time_stamp;
u16             alerm_flag;
u32             average_windspeed_10min;
u16             average_winddirection_10min;
u32             max_windspeed;
u32             extreme_windspeed;
u32             standard_windspeed;
u32             air_temperature;
u16             humidity;
u32             air_pressure;
u32             precipitation;
u32             precipitation_intensity;
u16             radiation_intensity;
u32             reserve1;
u32             reserve2;
s16             crc16;
}__attribute__((packed));

/*********************************crc校验部分**************************/
// -----------------------------------------------------------------------------
// DESCRIPTION: RTU CRC 校验的高位字节表
// -----------------------------------------------------------------------------
static const unsigned char auchCRCHi[] =
{
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01,
		0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
		0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,
		0xC1, 0x81, 0x40
};
// -----------------------------------------------------------------------------
// DESCRIPTION: RTU CRC 校验的低位字节表
// -----------------------------------------------------------------------------
static const unsigned char auchCRCLo[] =
{
		0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05,
		0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A,
		0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B,
		0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14,
		0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3, 0x11,
		0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36,
		0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF,
		0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28,
		0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D,
		0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26, 0x22,
		0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63,
		0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C,
		0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69,
		0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE,
		0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5, 0x77,
		0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50,
		0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55,
		0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A,
		0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B,
		0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C, 0x44,
		0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41,
		0x81, 0x80, 0x40
};

/**
* function:	crc校验函数，摘自国网标准
* version:		1.0
* author:		jjinl
* createdate:	2011/8/1
* input:		pushMsg:校验数据的起始地址
* 				usDataLen：校验数据的长度
* output:		返回crc校验值
* modifyexplain:
*/
unsigned short RTU_CRC(unsigned char * puchMsg,\
		unsigned short usDataLen)
{
	unsigned char uchCRCHi;
	// high byte of CRC initialized
	unsigned char uchCRCLo;
	// low byte of CRC initialized
	unsigned uIndex;
	// will index into CRC lookup table
	uchCRCHi = 0xFF;
	uchCRCLo = 0xFF;
	while (usDataLen--)
	{
		// calculate the CRC
		uIndex = uchCRCHi ^ (unsigned char) (*puchMsg++);
		uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex];
		uchCRCLo = auchCRCLo[uIndex];
	}
	return (uchCRCHi << 8 | uchCRCLo);
}
/*********************************crc**************************************/

jmp_buf reconnect_flag;
void sig_pipe(int sig)
{
	printf("server drop...\n");
	longjmp(reconnect_flag, 1);
}
int main()
{
	int sockfd = -1;
	int ret = 0;
	int portnumber = 7010;
	struct sockaddr_in server_addr;
	struct p_gdw_weath tmp;
	struct weather_packet send_wdata;	

	if (create_msgque("/dev/ttySPI0")< 0)
		return -1;

	if(setjmp(reconnect_flag))
		close(sockfd);
	/* 客户程序开始建立 sockfd描述符 */
	if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)/*建立SOCKET连接*/
	{
		fprintf(stderr,"Socket Error:%s\a\n",strerror(errno));
		return -1;
	}

	/* 客户程序填充服务端的资料 */
	
	signal(SIGPIPE,sig_pipe);
	bzero(&server_addr,sizeof(server_addr));
	server_addr.sin_family=AF_INET;
	server_addr.sin_port=htons(portnumber);
	server_addr.sin_addr.s_addr=inet_addr("192.168.1.101");

	while(connect(sockfd,(struct sockaddr*)&server_addr,sizeof(struct sockaddr))<0)
	{
		perror("connect:");
		sleep(5);
		//return -1;
	}

	while(1)
	{
		sleep(10);
		memset(&tmp,0,sizeof(struct p_gdw_weath));
		if((ret=rcv_msgque(&tmp,sizeof(struct p_gdw_weath))) < 0)
		{
			printf("recv msgque error\n");
			continue;
		}
		if (ret < sizeof (struct p_gdw_weath))
			continue;
		printf("recv :%d %d\n",ret,tmp.mtype);
		if (tmp.mtype != 1987 )
		{
			printf("msg type error\n");
			continue;
		}
		send_wdata.sync								= 0x5aa5;
		send_wdata.packet_length					= sizeof(struct weather_packet)-25;
		strncpy(send_wdata.cmd_id,"12345678901234567",17);
		send_wdata.frame_type						= 0x01;
		send_wdata.packet_type						= 0x01;
		strncpy(send_wdata.component_id,"12345678901234567",17);
		send_wdata.time_stamp						= time(NULL);
		send_wdata.alerm_flag						= 0;
		send_wdata.average_windspeed_10min		= tmp.average_windspeed_10min;
		send_wdata.average_winddirection_10min	= tmp.average_winddirection_10min;
		send_wdata.max_windspeed					= tmp.max_windspeed*10;
		send_wdata.extreme_windspeed				= tmp.extreme_windspeed*10;
		send_wdata.standard_windspeed			= tmp.standard_windspeed*10;
		send_wdata.air_temperature				= tmp.air_temperature*10;
		send_wdata.humidity							= tmp.humidity;
		send_wdata.air_pressure					= tmp.air_pressure*10;
		send_wdata.precipitation					= tmp.precipitation*10;
		send_wdata.precipitation_intensity		= tmp.precipitation_intensity*10;
		send_wdata.radiation_intensity			= 0;
		send_wdata.reserve1							= 0;
		send_wdata.reserve2							= 0;
		send_wdata.crc16 =RTU_CRC((unsigned char *)&send_wdata,sizeof(struct weather_packet)-2);
		printf("发送一次气象数据报\n");
		ret = send(sockfd,&send_wdata,sizeof(struct weather_packet),0);
		printf("send ret:%d\n",ret);
	}
	close(sockfd);
	return 0;
	
}